Smoke-burning device.



F. T. FARNUM. SMOKE BURNING DEVICE. APPLICATION IILED MAY 31, 1913.

Patented Feb. 17, 1914.

I fl WW7:

UNITED STATES PATENT QFFIOE.

FREDERICK T. FABNUM, OF CHICAGO, ILLINOIS, ASSIGNOR OE ONE-HALF TO JAMES W. MGCLEARN, OF CHICAGO, ILLINOIS.

SMOKE-BURNING DEVICE.

Specification of Letters Patent.

Patented Feb.17,1914t.

Application filed May 31, 1'913. Serial nmvd'seo'.

To all whom it may concern Be it known that I, FREDERICK T. FAR- NUM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Smoke-Burning Devices, of which the following is a specification.

My present invention relates to improvements in a smoke burning device, which is adapted to be installed in any one of the types of boiler furnaces now in common use, its object being, to provide'means for introducing a blast of air into the furnace, in such manner and at such pointsas to efiectively combine the same with the unburned carbon and other products of partial combustion, thus assuring the complete conversion of same into heat.

In the accompanying drawing, forming a part of this application, I have illustrated a preferred form of my invention in the following views:

Figure 1 is a sectional view of a brickset boiler and furnace, equipped with, and showing in operative connection, my smoke burning device, and Fig. 2 is an enlarged front elevation of my invention showing different relative positions of the two supplementary tubes which form elements thereof.

The reference character 3, designates a furnace of any conventional design, adapted to inclose and support a boiler 4:, and having as one of its members a bridge-wall 3 the upper front edge of which is beveled, as clearly shown in the drawing. Extending horizontally across the beveled edge of the bridge wall is a tubular cast iron casing or shell 5, formed with a downward and-constricted extension 5 which is adapted to depend in front of and across the upper edge of the bridge wall, and is provided with a plurality of holes 5 in its forward wall. Said shell 5 has pipe connections 5 at its two ends, from which forwardly extend lateral sections of piping 6, the outer ends of which are coupled with other sections and elbows 6 6*, 6, connected to form rectangular flues, as clearly shown in Fig. 2. Said fines are so disposed as to permit arrangement either parallel to the casing 5 as shown on the right hand side of Fig. 2, or to extend at right angles thereto and parallel to the side walls 8* of the fire pot of the furnace 3, as shown on the left hand side. Said flue members are provided with a plurality of apertures on their inner and front faces or walls, as at 6.

7 represents a pipe connecting with the coupling 5 which passes through the wall 3*, and forms a support for that end of the casing 5, and 7 a represents a similar support for the other or opposite end, the same being closed at its outer end which extends through the opposite wall 3'. If desired the section 7 may be open and communicate with a source of air-supply, the same as section 7. A slide valve or damper 8 is provided at a suitable point in the pipe 7 and has an extension 8 adapted to be connected with a damper rod (not shown) for effecting its movements thereby increasing or diminishing the supply of air to the shell 5.

The operation of my device is as follows':-A blast or current of air is forced or drawn through the pipe 7 and passes into the casing 5, and also, by means of the extensions 6, into the supplementary fiues 6, and escapes through the apertures 5 and 6 into the body of gases or products of partial combustion which are in and over the fire-bed and are passing over the bridge wall, thereby mixing with and causing same to be entirely consumed. As the rectangular flues 6 extend out and down into the bed of the fire, the air passing out from the apertures 6 will create drafts which also aid in the combustion of the smoke.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a smoke burning device, a hollow metal casing disposed across the upper and forward edge of the bridge wall of a furnace, the walls of which are contracted and extended downwardly from the body of said casing and-are perforated, tubular members extending forwardly from said casing and down into the bed of said furnace, said members being likewise perforated, and means 1f)or conducting air to said casing and memers.

9.. In a smoke burning device, a hollow metal casing disposed across the upper and forward edge of the bridge wall of a furnace, the Walls of said casing being contracted and extended downwardly from the body of said casing and the front face of In testimony whereof I afiix my signature Which is perforated, and tubular members in the presence of Witnesses.

extending forwardly from said casing, said F REDERICK T. FARNUM. members being also perforated, means for Witnesses: 5 conducting air to said casing and members, BERT F. GUNDERLOCK, and manually operable means for control- H. F. GRUETZMACHER, ling the supply of air in said conduit. 0. W. MOODY.

Copies of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

